A githyanki caster with bones of the earth would make for an interesting foe when accompanied by githyanki warriors, who could cast jump on themselves, be lifted aloft on the conjured pillars (I'd narrate them as appearing from a silver void/conjured from the Astral & flavored as ruined temple pillars), leap down to attack, then misty step back atop the pillars.Is that the kind of strategic input you're looking for? Tactics that a githyanki unit commander could use?
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